Answer
The matching is numbered and represented in red arrowsi n the diagram below:
Explanation
In a steam turbine electricity generation, the mechanical energy in form of pressure present in steam is extracted and converted into kinetic energy by allowing the steam to flow through the stationary blades. This kinetic energy is transmitted to the moving blades connected to the alternator of a steam turbine generator.
The matching of the process is shown below:
Answer:
Take for example I₂ (iodine)
Explanation:
It has only a pair of electrons between the iodine atoms in order to gain a stable arrangement of 8 electrons in its outer shell. It is sharing them, so it's a covalent bond as a single iodine atom cannot be stable on its own. It's a halogen and is a single covalently-bonded diatomic molecule.
Similarly, take oxygen. IT needs two pairs of electrons just so it can reach a stable outer shell of 8 electrons. If it doesn't then it cannot be stabilised so it must be bonded with another oxygen atom and share two electrons.
Electrons - 7
Atomic mass - 14
These are the answers to your question. I took chemistry too and I remember doing these I just looked through my old notes! For future reference, you can find the number of Electrons by s<span>ubtracting the number of protons (7) from the element's mass number (14).</span>
Answer:
1.0190 x 10⁻⁵ mol
Explanation:
We know the titration required 10.19 mL of 0.001000 M KIO₃, from this information we can calculate the number of moles KIO₃ reacted and from there the number of moles of ascorbic acid since it is a monoprotic acid ( 1 equivalent of ascorbic acid to one equivalent KIO₃).
Molarity = mol/V
V KIO₃ = 10.19 mL = 10.19 mL x 1 L/1000 mL = 0.01019 L
⇒ mol KIO₃ = V x M = 0.01019 L x 0.0010 mol / L = 1.0190 x 10⁻⁵ mol KIO₃
# mol ascorbic acid = # mol KIO₃ = 1.0190 x 10⁻⁵ mol